FROM TH2F
constant
45.496932353906075+-0.8498079365079311
chi2/ndof = 16.711940963058538
plane
62.194425254966376+-5.2111556375903625
invpt slope = 8.621493863138628+-0.8554552327812197
theta slope = -28.222793915864163+-4.607979439072594
chi2/ndof = 15.121057318680654
from tgraph2D
constant
58.92988172449386+-4.12863767922975
chi2/ndof = 1159.1041364641399
plane
94.96256142100877+-16.508918588292712
invpt slope = 17.25121142019211+-2.8841303853181866
theta slope = -59.9164458908195+-14.846978808458886
chi2/ndof = 699.7220485736214